Following comprehensive updates and revision of the two other vol- umes in this series ‘Domestic Gas Installation Practice’ and ‘Indus- trial and Commercial Gas Installation Practice’ (formerly Gas Service Technology 2 and 3), it was clearly essential that this, the first volume in the series, be brought up to date. ‘Basic Science and Practice of Gas Service’ leads the reader through the knowledge and understand- ing required to put into practice the safe installation and servicing procedures described in Volumes 2 and 3. Changes to standards and legislation have been included, in partic- ular the European gas directive relating to the prevention of products of combustion being released into a.